/Engine/Source/Editor/Experimental/EditorInteractiveToolsFramework/Public/EditorInteractiveGizmoManager.h
Let active Gizmos do screen space drawing. Called byUInteractiveToolsContext
virtual void DrawHUD ( [FCanvas](API\Runtime\Engine\FCanvas) * Canvas, [IToolsContextRenderAPI](API\Runtime\InteractiveToolsFramework\IToolsContextRenderAPI) * RenderAPI )